Sound machine



FIG. 1 is a top perspective view of a sound machine, showing our new design;

FIG. 2 is another top perspective view of the sound machine;

FIG. 3 is a bottom perspective view of the sound machine;

FIG. 4 is a front view of the sound machine;

FIG. 5 is a rear view of the sound machine;

FIG. 6 is a top plan view of the sound machine; and,

FIG. 7 is a bottom plan view of the sound machine.

The broken lines in the figures illustrate the portions of the design that form no part of the claimed design. 

CLAIM The ornamental design for a sound machine, as shown and described. 